{"id":155127,"date":"2026-01-25T17:11:59","date_gmt":"2026-01-25T15:11:59","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/predstavlena-fs-daxfs-pohozhaya-na-ramfs-i-tmpfs-no-rabotayushhaya-v-obhod-stranichnogo-kesha"},"modified":"2026-01-25T17:11:59","modified_gmt":"2026-01-25T15:11:59","slug":"predstavlena-fs-daxfs-pohozhaya-na-ramfs-i-tmpfs-no-rabotayushhaya-v-obhod-stranichnogo-kesha","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/predstavlena-fs-daxfs-pohozhaya-na-ramfs-i-tmpfs-no-rabotayushhaya-v-obhod-stranichnogo-kesha","title":{"rendered":"Bola predstaven\u00e1 FS DAXFS, podobn\u00e1 ramfs a tmpfs, ale funguj\u00faca obch\u00e1dzan\u00edm str\u00e1nkov\u00e9ho cache","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Cong Wang, ktor\u00fd sprev\u00e1dza subsyst\u00e9m spr\u00e1vy prev\u00e1dzky (TC, Traffic Control) v jadre Linux a vyv\u00edja projekt Multikernel, predstavil v zozname v\u00fdvoj\u00e1rov jadra Linux nov\u00fd s\u00faborov\u00fd syst\u00e9m DAXFS. DAXFS pou\u017e\u00edva na ukladanie d\u00e1t opera\u010dn\u00fa pam\u00e4\u0165, funguje v re\u017eime iba na \u010d\u00edtanie a pripom\u00edna vo funk\u010dnosti obmedzen\u00e9 s\u00faborov\u00e9 syst\u00e9my ramfs a tmpfs. Modul jadra s implement\u00e1ciou DAXFS a utilita mkdaxfs na vytv\u00e1ranie FS boli zverejnen\u00e9 pod licenciou GPLv2. Po recenzovan\u00ed sa zva\u017euje mo\u017enos\u0165 integr\u00e1cie DAXFS do hlavn\u00e9ho zlo\u017eenia jadra. <\/p>\n

K\u013e\u00fa\u010dov\u00fdm znakom nov\u00e9ho FS je zapojenie subsyst\u00e9mu DAX (Direct Access) na pr\u00e1cu obch\u00e1dzaj\u00facu str\u00e1nkov\u00fa cache a priamy pr\u00edstup k zdie\u013eanej fyzickej pam\u00e4ti. V ramfs a tmpfs sa obsah uchov\u00e1va v str\u00e1nkovom cache, \u010do pri pou\u017eit\u00ed jedn\u00e9ho FS v nieko\u013ek\u00fdch kontajneroch alebo jadr\u00e1ch spusten\u00fdch pomocou technol\u00f3gie Multikernel vedie k umiestneniu viacer\u00fdch k\u00f3pi\u00ed d\u00e1t vo fyzickej pam\u00e4ti. Naplnenie ramfs a tmpfs si tie\u017e vy\u017eaduje vykon\u00e1vanie zbyto\u010dn\u00fdch oper\u00e1ci\u00ed kop\u00edrovania bez mo\u017enosti vykona\u0165 mapovanie existuj\u00facej oblasti pam\u00e4te. <\/p>\n

Priamy pr\u00edstup k pam\u00e4ti v DAXFS umo\u017e\u0148uje vyl\u00fa\u010di\u0165 zbyto\u010dn\u00e9 oper\u00e1cie kop\u00edrovania a zorganizova\u0165 pr\u00e1cu obch\u00e1dzaj\u00facu tradi\u010dn\u00fd z\u00e1sobn\u00edk vstupu\/v\u00fdstupu zalo\u017een\u00fd na blokov\u00fdch zariadeniach a mechanizmoch vyrovn\u00e1vacej pam\u00e4te, ako aj zbavi\u0165 sa fragment\u00e1cie pride\u013eovania pam\u00e4te pri spolo\u010dnom pou\u017e\u00edvan\u00ed jedn\u00e9ho FS v r\u00f4znych kontajneroch a multikernel-jadr\u00e1ch. DAXFS pracuje v re\u017eime Zero-Copy a priamo poskytuje obsah s\u00faborov z pam\u00e4te bez zbyto\u010dn\u00e9ho duplicovania d\u00e1t v str\u00e1nkovom cache a s mo\u017enos\u0165ou mapovania nep\u0159eru\u0161en\u00fdch oblast\u00ed fyzickej pam\u00e4te do ka\u017ed\u00e9ho exempl\u00e1ra kontajnera alebo jadra. \u010ealej sa podporuje pou\u017eitie API dma-buf na vyu\u017e\u00edvanie pam\u00e4te exportovanej GPU, FPGA\/SmartNIC alebo CXL zariadeniami. <\/p>\n

FS pracuje v re\u017eime iba na \u010d\u00edtanie a inicializuje sa cez na\u010d\u00edtanie v pam\u00e4ti predpripraven\u00e9ho obrazu FS, \u010do zjednodu\u0161uje implement\u00e1ciu, umo\u017e\u0148uje zbavi\u0165 sa vykon\u00e1vania oper\u00e1ci\u00ed pride\u013eovania pam\u00e4te po\u010das pr\u00e1ce a vylu\u010duje zlo\u017eitosti mechanizmov riadenia zariadenia. <\/p>\n

K\u013e\u00fa\u010dov\u00e1 oblas\u0165 pou\u017eitia DAXFS sa naz\u00fdva aplik\u00e1cia v kombin\u00e1cii s technol\u00f3giou Multikernel, ktor\u00e1 umo\u017e\u0148uje na jednom fyzickom po\u010d\u00edta\u010di vykon\u00e1va\u0165 nieko\u013eko nez\u00e1visl\u00fdch in\u0161tanci\u00ed jadra Linux, ktor\u00e9 maj\u00fa priamy pr\u00edstup k hardv\u00e9rov\u00fdm zdrojom a m\u00f4\u017eu sa pou\u017e\u00edva\u0165 na sp\u00fa\u0161\u0165anie nieko\u013ek\u00fdch izolovan\u00fdch syst\u00e9mov\u00fdch prostred\u00ed. <\/p>\n

DAXFS sa m\u00f4\u017ee tie\u017e aplikova\u0165 na organizovanie spolo\u010dn\u00e9ho pr\u00edstupu nieko\u013ek\u00fdch kontajnerov alebo jadier k z\u00e1kladn\u00e9mu syst\u00e9mov\u00e9mu obrazu umiestnen\u00e9mu v zdie\u013eanej pam\u00e4ti; na zn\u00ed\u017eenie re\u017eijn\u00fdch n\u00e1kladov pri pr\u00edstupe k inform\u00e1ci\u00e1m v pam\u00e4ti hardv\u00e9rov\u00fdch akceler\u00e1torov; na organizovanie pr\u00edstupu k pam\u00e4ti z viacer\u00fdch hostite\u013eov bez sie\u0165ov\u00e9ho vstupu-v\u00fdstupu alebo k trvalej pam\u00e4ti, pri\u010dom sa pou\u017e\u00edvaj\u00fa zariadenia zalo\u017een\u00e9 na zbernici CXL (Compute Express Link).
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u043e\u043d\u0433 \u0412\u0430\u043d\u0433 (Cong Wang), \u0441\u043e\u043f\u0440\u043e\u0432\u043e\u0436\u0434\u0430\u044e\u0449\u0438\u0439 \u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0443 \u0443\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u044f \u0442\u0440\u0430\u0444\u0438\u043a\u043e\u043c (TC, Traffic Control) \u0432 \u044f\u0434\u0440\u0435 Linux \u0438 \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u044e\u0449\u0438\u0439 \u043f\u0440\u043e\u0435\u043a\u0442 Multikernel, \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u0432 \u0441\u043f\u0438\u0441\u043a\u0435 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u043e\u0432 \u044f\u0434\u0440\u0430 Linux \u043d\u043e\u0432\u0443\u044e \u0444\u0430\u0439\u043b\u043e\u0432\u0443\u044e \u0441\u0438\u0441\u0442\u0435\u043c\u0443 DAXFS. DAXFS \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u0434\u043b\u044f \u0445\u0440\u0430\u043d\u0435\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 \u043e\u043f\u0435\u0440\u0430\u0442\u0438\u0432\u043d\u0443\u044e \u043f\u0430\u043c\u044f\u0442\u044c, \u0440\u0430\u0431\u043e\u0442\u0430\u0435\u0442 \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043b\u044f \u0447\u0442\u0435\u043d\u0438\u044f \u0438 \u043d\u0430\u043f\u043e\u043c\u0438\u043d\u0430\u0435\u0442 \u043f\u043e \u0444\u0443\u043d\u043a\u0446\u0438\u043e\u043d\u0430\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u0443\u0440\u0435\u0437\u0430\u043d\u043d\u044b\u0435 \u0444\u0430\u0439\u043b\u043e\u0432\u044b\u0435 \u0441\u0438\u0441\u0442\u0435\u043c\u044b ramfs \u0438 tmpfs. \u041c\u043e\u0434\u0443\u043b\u044c \u044f\u0434\u0440\u0430 \u0441 \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0435\u0439 […]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-155127","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Predstaven\u00e1 FS DAXFS, ktor\u00e1 je podobn\u00e1 ramfs a tmpfs, ale funguje obch\u00e1dzaj\u00fac str\u00e1nkov\u00fd cache | ProHoster","description":"Cong Wang, ktor\u00fd sa venuje subsyst\u00e9mu spr\u00e1vy prev\u00e1dzky (TC, Traffic Control) v jadre Linux a rozv\u00edja projekt Multikernel, predstavil nov\u00fa s\u00faborov\u00fa syst\u00e9m DAXFS na zozname v\u00fdvoj\u00e1rov jadra 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